About the Book
Your comprehensive SQL guide from beginner to interview-ready expert. Covers SQL fundamentals, advanced techniques, expert strategies, and 140+ interview questions - everything you need to master PostgreSQL and ace your next database job interview.
SQL Crash Course
A Practical Guide From Beginner to Interview-Ready Expert
The Story Behind the Book
SQL is the backbone of modern data-driven applications, yet many resources either focus on basics OR advanced topics - never both. I created this comprehensive guide to bridge that gap, taking you from SQL fundamentals all the way to interview-ready expert in a single, progressive learning journey.
This 4-in-1 guide combines everything you need: SQL Fundamentals, Advanced Techniques, Expert Strategies, and Interview Preparation. With 270+ pages, 350+ practical examples, and 140+ interview questions, you'll build both knowledge and confidence. Whether you're a beginner starting your database journey or a professional preparing for your next SQL interview, this book provides a clear path to mastery.
Working with PostgreSQL as the primary database, but applicable across MySQL, SQL Server, and Oracle, this guide emphasizes hands-on learning with a complete e-commerce database. From basic queries to window functions, CTEs, query optimization, and big data handling - everything is organized as a practical, progressive guide for real-world application.
"This book is designed to be your complete SQL companion - from your first SELECT statement to confidently answering complex interview questions. No fluff, just practical skills that boost your career in data-driven roles."
- Vajo Lukic, Author
What You'll Discover
SQL Fundamentals
Master DDL and DML, database design, constraints and keys, basic queries, and all types of joins (INNER, LEFT, RIGHT, FULL, CROSS, SELF) with comprehensive examples.
Advanced SQL Techniques
Learn complex queries, subqueries, CTEs, window functions (RANK, ROW_NUMBER), stored procedures, triggers, and transaction management for professional SQL development.
Expert SQL Strategies
Master data cleaning and transformation, string manipulations, complex aggregations, moving averages, and handling big data with partitioning and sharding techniques.
Query Optimization & Performance
Learn indexing strategies, execution plans, query optimization techniques, and performance tuning to write efficient SQL that scales.
PostgreSQL & Cross-Platform
Master PostgreSQL with techniques applicable across MySQL, SQL Server, and Oracle. Includes SQL dialect comparison cheat sheet for major databases.
Interview Preparation
Get ready for your next SQL job with 140+ interview questions and practical tasks covering fundamentals, advanced concepts, and real-world problem-solving scenarios.
By the End of This Book, You Will:
- Master SQL from fundamentals to expert techniques with 350+ practical examples
- Write complex queries using window functions, CTEs, subqueries, and advanced joins
- Optimize query performance with indexing strategies and execution plan analysis
- Apply PostgreSQL skills across MySQL, SQL Server, and Oracle databases
- Ace SQL job interviews with 140+ questions and practical problem-solving tasks
Synopsis
Overwhelmed by SQL? This comprehensive 4-in-1 guide makes mastering SQL straightforward and achievable. From your first SELECT statement to complex window functions and interview questions, this book provides a progressive learning path to SQL expertise.
Designed for developers, data analysts, database administrators, and job seekers, this guide covers 270+ pages with 350+ practical examples, SQL fundamentals through expert techniques, query optimization, PostgreSQL (applicable to MySQL, SQL Server, Oracle), and 140+ interview questions - everything you need to become interview-ready.
From learning your first query to preparing for SQL coding interviews and building data-driven applications, this crash course gives you the practical knowledge to master SQL with confidence. Includes FREE complete e-commerce database, 380+ SQL statements, and comprehensive cheat sheets.
What's Inside: 4 Parts
Part I: SQL Fundamentals
Introduction to databases and SQL, DDL and DML, constraints and keys, basic queries, and all join types with comprehensive examples
Part II: Advanced SQL Techniques
Complex queries, subqueries, CTEs, window functions, stored procedures, triggers, transactions, and query optimization
Part III: Expert SQL Strategies
Data generation and manipulation, data cleaning and transformation, deduplication, string operations, complex aggregations, and big data handling
Part IV: SQL Interview Preparation
140+ interview questions and practical tasks covering fundamentals, advanced concepts, and real-world problem-solving scenarios
Book Details
Specifications
Includes FREE Bonus Resources
Every book includes FREE SQL database, code library, and cheat sheets
Download link exclusively inside the book
Ready to Master SQL?
Join developers, data analysts, and database professionals who've mastered SQL from fundamentals to expert level. Your journey to SQL expertise and interview readiness starts here.